Dominic Cummings has fallen under further fire this evening after claims he made a second trip during lockdown - just days after recovering from Covid-19.

Pressure was already mounting on the Prime Minister to sack his chief aide after it was revealed he made a 260-mile trip to County Durham from his London home while displaying symptoms of the virus.

Opposition parties are calling for a full investigation into the incident, which has prompted politicians to call for Boris Johnson to 'show Cummings the door'.

READ MORE: Number 10 confirm Dominic Cummings' 260-mile lockdown trip but say actions were 'in line with guidelines'

Now The Mirror, who first broke the story of Cummings' trip last night, has revealed in a joint investigation with the Guardian/Observer that witnesses have come forward who claim to have spotted the aide on another lockdown journey.

They say he was spotted in Houghall Woods just two weeks after the first sighting, and five days after returning to work following his recovery from Covid-19.

Strict rules were still in place not to travel.

A second eyewitness told the two papers they also saw him a week earlier in Barnard Castle on Easter Sunday, a popular tourist location 30 miles away from Durham.

The news comes after a host of senior Cabinet ministers – including Health Secretary Matt Hancock and Attorney General Suella Braverman – took to social media to show support for Mr Cummings.

Transport Secretary Grant Shapps, speaking at the daily Downing Street briefing, said Mr Cummings had “stayed put for 14 days” while residing at a family property, having preempted his own illness once his wife showed Covid-19 symptoms.

But the trip to Barnard Castle, if correct, would call that testimony into question.

Ian Blackford, leader in Westminster of the SNP, renewed his calls for the PM to axe Mr Cummings from his team following the new reports.

He said in a statement: “These fresh claims are extraordinary. If true, they raise serious questions for Dominic Cummings – and over Boris Johnson’s judgment.

“The Prime Minister must come out of hiding, sack Mr Cummings, and then answer for his own role in this mess and the Downing Street cover-up.

“Given the seriousness of these issues, the Cabinet Office inquiry should take place regardless of when Mr Cummings is removed from post. We need to know who knew what and why the public were kept in the dark for eight weeks over the rule-breaking.

“Dominic Cummings broke multiple lockdown rules, possibly on multiple occasions, and polls show the majority of the public think he should go.

“If Boris Johnson is to salvage any public confidence in his Government he must finally act and show Mr Cummings the door.”

A YouGov poll now shows that 68 per cent of people think Cummings broke the rules, 52 per cent saying he should resign.

After the news of his first trip broke today, Cummings talked to reporters outside his London home on Saturday afternoon, and said: "I behaved reasonably and legally."

When a reporter suggested to him outside his London home that the trip to Durham did not look good, he replied: “Who cares about good looks.?

“It’s a question of doing the right thing. It’s not about what you guys think.”

And in its first official statement since the news broke, Downing Street backed Cummings and said his actions were 'in line with guidelines'.

READ MORE: SNP call for Cabinet Office investigation into 'Tory Government's cover-up' after Cummings' trip

The statement read: "Owing to his wife being infected with suspected coronavirus and the high likelihood that he would himself become unwell, it was essential for Dominic Cummings to ensure his young child could be properly cared for.

"His sister and nieces had volunteered to help so he went to a house near to but separate from his extended family in case their help was needed.

"His sister shopped for the family and left everything outside."